nerv[9], cent[7], gern[5], engt[5], regt[5], ernt[4], nett[4], rett[4], tret[4],
cer[6], eng[4], gen[4], erg[4], ger[4], reg[4], ern[3], ren[3], net[3],
ne[2], er[2], re[2], et[2],
